EP3643744B1 - Kautschukzusammensetzung für schwingungsdämpfenden kautschuk - Google Patents
Kautschukzusammensetzung für schwingungsdämpfenden kautschuk Download PDFInfo
- Publication number
- EP3643744B1 EP3643744B1 EP18821193.2A EP18821193A EP3643744B1 EP 3643744 B1 EP3643744 B1 EP 3643744B1 EP 18821193 A EP18821193 A EP 18821193A EP 3643744 B1 EP3643744 B1 EP 3643744B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- parts
- rubber
- carbon black
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920001971 elastomer Polymers 0.000 title claims description 52
- 239000005060 rubber Substances 0.000 title claims description 52
- 239000000203 mixture Substances 0.000 title claims description 15
- 239000006229 carbon black Substances 0.000 claims description 52
- 238000010521 absorption reaction Methods 0.000 claims description 26
- 239000004711 α-olefin Substances 0.000 claims description 14
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 13
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 229910052740 iodine Inorganic materials 0.000 claims description 13
- 239000011630 iodine Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 150000001451 organic peroxides Chemical class 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 26
- 229920002943 EPDM rubber Polymers 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 238000004132 cross linking Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- OJOWICOBYCXEKR-APPZFPTMSA-N (1S,4R)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound CC=C1C[C@@H]2C[C@@H]1C=C2 OJOWICOBYCXEKR-APPZFPTMSA-N 0.000 description 1
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 1
- RIPYNJLMMFGZSX-UHFFFAOYSA-N (5-benzoylperoxy-2,5-dimethylhexan-2-yl) benzenecarboperoxoate Chemical compound C=1C=CC=CC=1C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C1=CC=CC=C1 RIPYNJLMMFGZSX-UHFFFAOYSA-N 0.000 description 1
- NALFRYPTRXKZPN-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane Chemical compound CC1CC(C)(C)CC(OOC(C)(C)C)(OOC(C)(C)C)C1 NALFRYPTRXKZPN-UHFFFAOYSA-N 0.000 description 1
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- ODBCKCWTWALFKM-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhex-3-yne Chemical compound CC(C)(C)OOC(C)(C)C#CC(C)(C)OOC(C)(C)C ODBCKCWTWALFKM-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000000370 acceptor Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229940070710 valerate Drugs 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/005—Combined materials of same basic nature but differing characteristics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/025—Elastomers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2226/00—Manufacturing; Treatments
- F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/001—Specific functional characteristics in numerical form or in the form of equations
- F16F2228/005—Material properties, e.g. moduli
- F16F2228/007—Material properties, e.g. moduli of solids, e.g. hardness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
Definitions
- the present invention relates to a rubber composition for anti-vibration rubber. More particularly, the present invention relates to a rubber composition for anti-vibration rubber that can be effectively used as, for example, a vulcanization molding material for a center bearing support that provides anti-vibration support to a vehicle propeller shaft.
- anti-vibration rubber are required to have anti-vibration function to absorb and suppress the vibration of supporting a heavy load, and also required to have high strength properties for supporting the heavy load.
- the temperature of environment near a center bearing support that provides anti-vibration support to a propeller shaft (shaft that transmits mobile power from an engine to a rear-wheel differential) has recently tended to increase.
- Increasing demands are being placed on further improvement of heat resistance of the materials to be used therefor.
- improvement of durability for reliability enhancement, and improvement of anti-vibration properties for vehicle quietness are necessary issues.
- An object of the present invention is to provide a rubber composition for anti-vibration rubber that has low dynamic magnification (small increase in elastic modulus associated with an increase in rubber deformation rate), excellent durability (bearing force against breakage due to repeated deformation of rubber), excellent heat resistance, etc., and that can be effectively used as a vulcanization molding material for center bearing supports, etc.
- a rubber composition for anti-vibration rubber comprising, based on 100 parts by weight of ethylene-propylene-diene-based copolymer rubber:
- EPDM is compounded with two types of carbon black, i.e., (A) carbon black A having an average particle diameter of 60 to 100 nm, an iodine absorption amount of 14 to 23 g/kg, and a DBP oil absorption amount of 100 ml/100 g or more, and (B) carbon black B having an average particle diameter of 40 to 50 nm, an iodine absorption amount of 35 to 49 g/kg, and a DBP oil absorption amount of 100 to 160 ml/100 g.
- A carbon black A having an average particle diameter of 60 to 100 nm, an iodine absorption amount of 14 to 23 g/kg, and a DBP oil absorption amount of 100 ml/100 g or more
- B carbon black B having an average particle diameter of 40 to 50 nm, an iodine absorption amount of 35 to 49 g/kg, and a DBP oil absorption amount of 100 to 160 ml/100 g.
- the rubber composition for anti-vibration rubber of the present invention comprises, based on 100 parts by weight of EPDM: (A) 32 to 60 parts by weight of carbon black A having an average particle diameter of 60 to 100 nm, an iodine absorption amount of 14 to 23 g/kg, and a DBP oil absorption amount of 100 ml/100 g or more; (B) 10 to 30 parts by weight of carbon black B having an average particle diameter of 40 to 50 nm, an iodine absorption amount of 35 to 49 g/kg, and a DBP oil absorption amount of 100 to 160 ml/100 g; and (C) 2 to 10 parts by weight of ethylene- ⁇ -olefin copolymer.
- the proportion of these components is adjusted so that the rubber hardness (Hs) of anti-vibration rubber after crosslinking is 60 to 80. If the rubber hardness of anti-vibration rubber after crosslinking is less than this range, elasticity sufficient for supporting propeller shafts cannot be obtained. In contrast, if the rubber hardness of anti-vibration rubber after crosslinking is greater than this range, the dynamic magnification increases, and desired anti-vibration effects cannot be obtained.
- any products obtained by copolymerization of ethylene and propylene with a small amount of various non-conjugated diene components can be used.
- non-conjugated diene preferably, a product obtained by copolymerization with 5-ethylidene-2-norbornene, dicyclopentadiene, 1,4-hexadiene, or the like is used.
- Carbon black A as the component (A) is one having an average particle diameter of 60 to 100 nm, an iodine absorption amount of 14 to 23 g/kg, and a DBP oil absorption amount of 100 ml/100 g or more, preferably 100 to 160 ml/100 g.
- SRF-HS-HF carbon black is used at a ratio of 32 to 60 parts by weight, preferably 35 to 55 parts by weight, based on 100 parts by weight of EPDM.
- Carbon black A is used as carbon for reducing dynamic magnification. If the amount of carbon black A used is less than this range, the effect for the target dynamic magnification is insufficient. In contrast, if the amount of carbon black A used is greater than this range, agglomerate (secondary agglomerate of carbon black) causes remarkable breakage, and the durability is deteriorated.
- Carbon black B as the component (B) is one having an average particle diameter of 40 to 50 nm, an iodine absorption amount of 35 to 49 g/kg, and a DBP oil absorption amount of 100 to 160 ml/100 g.
- FEF carbon black is used at a ratio of 10 to 30 parts by weight, preferably 15 to 25 parts by weight, based on 100 parts by weight of EPDM.
- Carbon black B is used to impart reinforcement and improve the dispersibility of carbon black A. If the amount of carbon black B used is less than this range, the effect of improving dispersibility is insufficient, and the durability is deteriorated. In contrast, if the amount of carbon black B used is greater than this range, agglomerate (secondary agglomerate of carbon black) causes remarkable breakage, and the durability is deteriorated.
- Ethylene- ⁇ -olefin copolymer as the component (C) is used at a ratio of 2 to 10 parts by weight, preferably 3 to 7 parts by weight, based on 100 parts by weight of EPDM.
- ⁇ -olefins one having 3 to 10 carbon atoms is used.
- commercial products such as TAFMER A4085 (produced by Mitsui Chemicals, Inc.), can be used as they are. If the ratio of the ethylene- ⁇ -olefin copolymer used is less than this range, the dynamic magnification is inferior. In contrast, if the ratio of the ethylene- ⁇ -olefin copolymer used is greater than this range, processability using an open roll is deteriorated.
- silica (D) can be further used, in terms of reducing dynamic magnification.
- silica one having a BET method specific surface area (according to ASTM D-1993-03) of 150 to 300 m2/g, preferably 180 to 230 m 2 /g, is used at a ratio of 16 parts by weight or less, preferably 2 to 16 parts by weight, based on 100 parts by weight of EPDM.
- organic peroxide (E) is used as a crosslinking agent.
- organic peroxide (E) examples thereof include t-butyl peroxide, dicumyl peroxide, t-butylcumyl peroxide, 1,1-di(t-butylperoxy)-3,3,5-trimethylcyclohexane, 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 2,5-dimethyl-2,5-di(t-butylperoxy)hexyne-3, 1,3-di(t-butylperoxyisopropyl)benzene, 2,5-dimethyl-2,5-di(benzoylperoxy)hexane, t-butylperoxy benzoate, t-butylperoxy isopropyl carbonate, n-butyl-4,4'-di(t-butylperoxy)valerate, and the like.
- the organic peroxide is used in a proportion of 1 to 8 parts by weight, preferably 2 to 7 parts by weight, based on 100 parts by weight of the EPDM. If the proportion is less than this range, sufficient crosslinking density is not obtained, and heat resistance and compression set characteristics are inferior. In contrast, if the proportion is greater than this range, a crosslinking-molded product cannot be obtained due to foaming.
- Sulfur or a sulfur-containing compound (F) can also be used in combination as a vulcanizing agent. The sulfur or sulfur-containing compound is used at a weight ratio of about 1/10 or less, preferably about 1/30 to 1/20, with respect to the organic peroxide.
- compounding agents generally used in the rubber industry are suitably added to the composition, within a range that does not impair the properties.
- the compounding agent include processing aids, such as stearic acid, palmitic acid, paraffin wax, process oil and liquid polybutadiene; acid acceptors, such as oxide or hydroxide of a divalent metal (e.g. zinc oxide, magnesium oxide, etc.) and hydrotalcite; plasticizers; antiaging agents; and the like.
- the above components are kneaded using an open roll, a Banbury mixer, a kneader, or the like.
- a compression molding machine, an impregnation molding machine, or an injection molding machine the kneaded material is vulcanization-molded into predetermined anti-vibration rubber products, such as a center bearing support, at a temperature of about 140 to 250°C at a pressure of about 2 to 50 MPa for 1 to 30 minutes.
- EPDM Korean6750, produced by Lanxess
- Carbon black A Seast G- SWA, produced by 46 parts by weight Tokai Carbon Co., Ltd. average particle diameter: 60 to 100 nm iodine absorption amount: 14 to 23g/kg ; DBP oil absorption amount : 100ml/100g or more
- Carbon black B Seast G-SO, produced by 18 parts by weight Tokai Carbon Co., Ltd.
- Ethylene- ⁇ -olefin copolymer (TAFMER A4085, 5 parts by weight produced by Mitsui Chemicals) Silica (Nipsil LP, produced by Toso-Silica Co.) 10 parts by weight Organic Peroxide 2 parts by weight (Percumyl D, produced by NOF Corporation) Sulfur 0.1 parts by weight
- the above blending components were kneaded with a kneader and an open roll.
- the kneaded product was then subjected to press crosslinking at 180°C for 6 minutes, and a test piece was obtained.
- Example 1 the amount of the carbon black A was changed to 39 parts by weight, and that of the carbon black B was changed to 15 parts by weight, respectively.
- Example 1 the amount of the carbon black A was changed to 53 parts by weight, and that of the carbon black B was changed to 21 parts by weight, respectively.
- Example 1 the amount of the carbon black A was changed to 25 parts by weight, and that of the carbon black B was changed to 29 parts by weight, respectively.
- Example 1 the amount of the carbon black A was changed to 63 parts by weight, and that of the carbon black B was changed to 11 parts by weight, respectively.
- Example 1 the amount of the carbon black A was changed to 50 parts by weight, and that of the carbon black B was changed to 5 parts by weight, respectively.
- Example 1 the amount of the carbon black A was changed to 30 parts by weight, and that of the carbon black B was changed to 35 parts by weight, respectively.
- Example 1 the same amount (5 parts by weight) of ethylene-vinyl acetate copolymer (Levaprene 500, produced by Bayer) was used in place of ethylene- ⁇ -olefin copolymer.
- Example 1 the same amount (5 parts by weight) of aromatic modified terpene resin (YS RESIN TO105, produced by Yasuhara Chemical Co., Ltd.) was used in place of ethylene- ⁇ -olefin copolymer.
- Example 1 ethylene- ⁇ -olefin copolymer was not used.
- Example 1 rubber composition of the following composition was used.
- SBR SBR1502, produced by Zeon Corporation
- BR BR1250H, produced by Zeon Corporation
- EPDM Keltan6750
- Carbon black C Asahi #35G, produced by 19 parts by weight Asahi Carbon Co., Ltd.
- test pieces obtained in the above Examples and Comparative Examples were measured and evaluated for their hardness, dynamic magnification, fatigue resistance, and heat resistance.
- Dynamic magnification The ratio of the elastic modulus of material having a deformation rate of 50%/sec to the elastic modulus of material having a deformation rate of 1%/sec was determined at Kd 50Hz/Kst, and the rubber materials of Examples 1 to 3 and Comparative Examples 1 to 7 having the same hardness were evaluated in comparison with any of Comparative Examples 8 to 10, in which EPDM and SBR were used.
- the rubber material having a dynamic magnification less than that of the corresponding Comparative Example was evaluated as O; the rubber material having a dynamic magnification that was 1 to 1.1 times that of the corresponding Comparative Example was evaluated as ⁇ ; and the rubber material having a dynamic magnification exceeding 1.1 times that of the corresponding Comparative Example was evaluated as ⁇ .
- Heat resistance Hardness changes at 125°C after 150 hours were determined.
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Claims (7)
- Kautschukzusammensetzung für schwingungsdämpfenden Kautschuk, umfassend, bezogen auf 100 Gewichtsteile Copolymerkautschuk auf Ethylen-Propylen-Dien-Basis:(A) 32 bis 60 Gewichtsteile Ruß A mit einem durchschnittlichen Teilchendurchmesser von 60 bis 100 nm, einer Jodabsorptionsmenge von 14 bis 23 g/kg und einer DBP-Ölabsorptionsmenge von 100 ml/100 g oder mehr;(B) 10 bis 30 Gewichtsteile Ruß B mit einem durchschnittlichen Teilchendurchmesser von 40 bis 50 nm, einer Jodabsorptionsmenge von 35 bis 49 g/kg und einer DBP-Ölabsorptionsmenge von 100 bis 160 ml/100 g;(C) 2 bis 10 Gewichtsteile eines Ethylen-α-Olefin-Copolymers und(D) 0 bis 16 Gewichtsteile Siliciumdioxid.
- Kautschukzusammensetzung für schwingungsdämpfenden Kautschuk nach Anspruch 1, wobei 2 bis 16 Gewichtsteile Siliciumdioxid eingemischt sind.
- Kautschukzusammensetzung für schwingungsdämpfenden Kautschuk nach Anspruch 1, wobei des weiteren 1 bis 8 Gewichtsteile (E) organisches Peroxid als Vernetzungsmittel hinzugemischt sind.
- Kautschukzusammensetzung für schwingungsdämpfenden Kautschuk nach Anspruch 3, wobei in Kombination mit dem organischen Peroxid (F) Schwefel in einem Gewichtsverhältnis von 1/10 oder weniger in Bezug auf das organische Peroxid verwendet wird.
- Schwingungsdämpfender Kautschuk, hergestellt durch Vulkanisieren, um die Kautschukzusammensetzung für schwingungsdämpfenden Kautschuk nach Anspruch 3 oder 4 zu formen.
- Schwingungsdämpfender Kautschuk nach Anspruch 5, der eine Gummihärte von 60 bis 80 aufweist.
- Schwingungsdämpfender Kautschuk nach Anspruch 5, der als Mittellagerung verwendet wird.
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JPH07122005B2 (ja) * | 1987-04-15 | 1995-12-25 | 株式会社ブリヂストン | ゴム組成物 |
JP2857198B2 (ja) | 1990-01-31 | 1999-02-10 | 三井化学株式会社 | 耐熱防振ゴム材料用ゴム組成物 |
CZ284059B6 (cs) * | 1992-08-27 | 1998-08-12 | Cabot Corporation | Saze a kompozice je obsahující |
JP3376658B2 (ja) * | 1993-11-16 | 2003-02-10 | ジェイエスアール株式会社 | 熱風架橋用エチレン−プロピレン系共重合ゴム組成物 |
JP3950995B2 (ja) * | 1997-12-15 | 2007-08-01 | 東海カーボン株式会社 | 耐熱防振ゴム用ゴム組成物 |
JP3840841B2 (ja) * | 1999-06-21 | 2006-11-01 | Nok株式会社 | センターベアリングサポート |
JP3773381B2 (ja) | 1999-08-06 | 2006-05-10 | 東海カーボン株式会社 | 防振ゴム用カーボンブラック及び該カーボンブラックを配合した防振ゴム組成物 |
BRPI0622102A2 (pt) * | 2006-10-30 | 2011-12-27 | Pirelli | pneu para rodas de veÍculo, e, processo para produzir uma composiÇço elastomÉrica reticulÁvel |
JP5424893B2 (ja) * | 2007-12-05 | 2014-02-26 | 三井化学株式会社 | ゴム組成物、該組成物の架橋体および発泡体、該組成物からなるゴム成形体ならびにそれらの用途 |
JP5557835B2 (ja) * | 2009-03-30 | 2014-07-23 | 三井化学株式会社 | オレフィンと共役ジエンとの共重合体、およびその製造方法 |
JPWO2011129168A1 (ja) * | 2010-04-12 | 2013-07-11 | Nok株式会社 | ゴム組成物及びその用途 |
JP5891048B2 (ja) * | 2012-01-30 | 2016-03-22 | 株式会社ブリヂストン | 防振ゴム組成物、架橋防振ゴム組成物及び防振ゴム |
CN102775652B (zh) * | 2012-08-16 | 2015-03-11 | 株洲时代新材料科技股份有限公司 | 一种热塑性弹性体微孔发泡材料及其制备方法 |
US9434836B2 (en) * | 2013-07-25 | 2016-09-06 | Nok Corporation | EPDM composition for torsional damper |
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CN110678512B (zh) | 2020-09-29 |
WO2018235587A1 (ja) | 2018-12-27 |
US11472952B2 (en) | 2022-10-18 |
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